Improvement in insulating-supports for telegraph-wires



LPR. LIVINGSTON, J. J. ROGGEN & O. ADAMS. INSULATING SUPPORT FOR TELEGRAPH WIRES.

No. 5,889. Patented 001;. 31, 1848.

UNITED STATES L. It. LIVINGSTON, J. J. ROGGEN, AND CALVIN ADAMS/0F PITTSBURG, PA.

PATENT OFFICE.-

IMPROVEME NT lN INSULATING-SUPPORTS FOR TELEGRAPH-WIRES.

' Specification forming part of Letters Patent No. 5,889, dated October 31, 1848.

' the following to be a full, clear, and exact description thereof, reference being bad to the accompanying drawings, making a part of this specification, in which- Figure I is a vertical longitudinal section of the metallic portion of the supporter inserted .into the section of a post; and Figs. 2 and 3 are perspective views of the component parts of the supporter detached. Fig.4 is a view of a portion of the telegraph-wire.

Similar letters indicate like parts in all they figures.

A is a vertical section of a portion of the upper end of a post into which the insulatingsupporter is inserted and secured.

B is theprinci pal metallic portion of the supporter, the shank of which passes through an 1 aperture in the post, and is retained in thesame by means of the key 2', or, if preferred, by a nut and screw.

land at are vertical arms, rising from the front end of B, which receive between them the glass insulator D. The insulator D is secured in its position by means of vertical grooves in its sides, into which the arms land on accurately fit.

1) is the aperture through the insulator that receives and sustains the telegraph-wire. The wire is placed in the aperture 1) in the insulator, through the zigzag or'curved slit at, opening into the top of the same, the wire being first forced into the shape represented in Fig. 4, corresponding with the slit or opening n. The curve or angle in the wire is then removed a sufficient distance from the insulator to prevent the possibility of the wires being lifted out of the aperture in the same. Thus it will be perceived that the wire can be securely retained in the aperture of the insulator simply by means of a curved or a zigzag opening into the same through which the wire is admitted.

G is the roof for covering the insulator and preventing snow, ice, or moisture from reach ing the same. The 'roof O is secured in its position as follows:

F is a plane surface on the upper side of the supporting-shank of B, which receives the plane surface E on the under side of the shank of the roof.

h is a vertical slot passing through the shank B, embraein g a portion of the plane F.

g is a lug or tooth descending from the end of the plane E of the shank of the roof, which fits into the inner end of the slot h, when the roof-shank is placed in its position on the supporting-shank, as represented in Fig. 1. The roof and supporting-shanks being thus fitted to each other, are driven into a small aperture in the post, which securelyunites them. The key 2', which fastens the supporter to the post, passes through the outer end of the sloth. The long arm I rises to-the roof (3,215 shown in Fig: 1, and aids in sustaining the same.

Iq k are flanges projecting from the under side of the supporting-shank B and from the upper side of the shank of the roof, which, as they are forced into the sides of the aperture inthe post, serve to secure the supporter more firmly and prevent it from turning.

The roof 0 serves to keep the insulator D from contact with moisture, and also prevents it from being removed from its position between the arms 1 and m. The aperture 19 in the insulator D is smallest at its center, and gradually enlarges from this point toward each extremity, as represented in Fig. 5. The object of giving the aperture this form is to enable 7 the supporting-posts to be placed in such positions as to cause a considerable angle of the telegraph-wire at the insulators without exposing the wire to danger of injury. This form of aperture p also serves to carry 011' the water, should any find its way to the insulator, and prevents it from accumulating and freezing about the wire and filling up the aperture.

Flanges s s descend from the sides of the insulator on each side of its supporter B, as represented in Fig. 5, which serve to carry ofi any water that may find its way to the insulator and prevent it from accumulating and freezing between the insulator and its supporter, and also serve to give the insulator additional permanence in its position. Theeross-section of 2. e ses that portion of B under the insulator tapers er B, the glass insulator D, and the roof 0, ofi to a. point on its under side, as shown in COIDblIlGiWlllll each other and with the .post Fig. 5, serving as an additional means of pre- A,subsmntiajlly in themanner herein set forth. venting the accumulation of Water about Llae L. E. LIVINGSTON.

insulaton. v JQHN J. ROGGEN. What we claim as our invention, and desire CALVIN ADAMS,

to secure by Letters Patent, is--- Witnesses:

Our improved insulating-supporter for tele- I ALEX. MILLAR,

graph-wires,composed of the metallic support- WM. 1). WOOD. 

